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An engine with an output of 267.0 W has an efficiency of 39.0 %. It works at 9.00 cycles/s. How much work is done in each cycle? How much heat is rejected each cycle?
a projectile is launched vertically from the surface of the moon with an initial speed of 1100m/s. At what altitude is the projectile's speed one-half its initial value
You are working for a shipping company. Your coworker is supposed to grab the packages as they arrive at the top of the ramp. But she misses one and it slides back down. What is its speed when it returns to you
A 5.43 kg block free to move on a horizontal, frictionless surface is attached to one end of a light horizontal spring. find the speed of the block at the equilibrium position of the spring
A 2.8 kg solid sphere (radius = 0.20 m) is released from rest at the top of a ramp and allowed to roll without slipping, When the sphere reaches the bottom of the ramp
An ideal refrigerator does 130 J of work to remove 655 J of heat from its cold compartment during each cycle. How much heat per cycle is exhausted to the kitchen
By holding a magnifying glass 29cm from your desk lamp, you can focus an image of the lamp's bulb on a wall 1.8m from the lamp. What is the focal length of your magnifying glass
A 4.0 m long horizontal boom (of negligible weight) can pivot at the wall to which it is attached and it is supported by a cable hooked 0.6 m from the far end that is at an angle of 37.2 degrees to the boom. find the normal force of the wall pushin..
A 4.6mH toroidal inductor has 150 identical equally spaced coils. If it carries an 12.0A current, at what rate is the current in it changing
if the boy is traveling at 1m/s relative to the ground, explain how fast does the boy appear to be moving relative to the woman?
Illustrate what is the safe's coefficient of kinetic friction on the bank floor?
An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. What is the mass of this canister
Suppose the Eskimo is pushing the same 50.0-kg sled across level terrain with a force of 50 N. If he does 4 x 10^2J of work on the sled while exerting the force horizontally, through what distance must he have pushed it.
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